All about flooble | fun stuff | Get a free chatterbox | Free JavaScript | Avatars    
perplexus dot info

Home > Probability
Red ball... Red ball (Posted on 2002-10-17) Difficulty: 4 of 5
If you take two balls randomly out of a jar of colored balls, there is a 50% chance that the balls will both be red.

What is the total percentage of red balls in the jar?

See The Solution Submitted by levik    
Rating: 3.1538 (13 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)
Solution re: solution - and my own one | Comment 11 of 15 |
(In reply to solution by Keedom)

no, because once youve picked out 1 red ball, theres 1 less red ball to take out. so you need two fractions that equal 1/2 when multipied. 2/3 and 3/4 fit this, and it is the only answer to the problem.

  Posted by sassy on 2004-05-13 19:36:19
Please log in:
Remember me:
Sign up! | Forgot password

Search body:
Forums (0)
Newest Problems
Random Problem
FAQ | About This Site
Site Statistics
New Comments (4)
Unsolved Problems
Top Rated Problems
This month's top
Most Commented On

Copyright © 2002 - 2018 by Animus Pactum Consulting. All rights reserved. Privacy Information